Demountable wheel-rim.



1. A. BROWN. DEMOUNTABLE WHEEL RIM.

APPLICATION FILED JULY 20 IQII- lzllvlltml NM. 11, W18.

A Z SHEETS -SHEET I. 2

J A. BROWN.

DEMOUNTABLE WHEEL RIM.

APPLiCATlON FILED- JULY 204 191/.

1,99%, Puivutvd NM. 12,1918.

2 SHEEIS- SHEET 2.

(FAMES A. BRO W11", CEICAGO; ILLINQIS.

DEMUUMIABLE WHEEL-RIM.

Specification of Letters Patent. I

Patented Nov. 32, 193E Applicationfiled Jul-y 20, 1317. Serial He. H1376.

@f'b oZZ whom it may concern:

Be it lcnown that 1, JAMES A. BROWN, a mine o e United-States, residing; at (Jhi- .llinois, have invented new and useful. linproveinents in Demountable Wheelllims, of which "the following is a specification.

This invention relates to demountable wheel rimsfor carrying pneumatic and other tires, and more articularly rims of this kind which are sp it so that they may be contracted for the purpose of facilitating the anplicationand removal of the tire.

The invention has for its object to pro-- ride in connection with a rim of the kind stated, a novel and improved means for consracting the same. as will be'descrihed in detail hereinafter, and claimed. in order that the invention may he better understood, reference is had to the accornpanying drawing forming a part of this specification, and in said drawings,

Figure 1 is an elevation of a dcmountable "Wheel rim artl in section showin the application of the invention; Fig. 2 is a longitudinal section of the device; Fig. 3 is a similar View showing the device swung to contractthe rim; Fig. 4: is an enlarged cross section on the line s r-4 of Fig. 9; Fig. 5 is a plan View of the device, and Fig. 6 is an ele vati'on of a rim, partly in section, showing a modification.

Referring specifically to the'drawings, 5 denoies a tire supporting mm which 18 adapted so he detachablymounted on the Wheel in the ordinary nanncr. This rim is split trsnsversely, as shown at 6, so that it may be contracted when the tire is to be put on or ielren oil and thus facilitate the application and removal of the tire. The present invention relates to a means for contracting the rim for the purpose stated, and it is composed. of the following parts:

To the inner face of the rim 0 is riveted,

or otherwise rigidly secured a ring 7 which is dimensioned to lit the rim on the inside. The ring is not as wide as the rim, and the latter has a channel- 8 in its inner face in which on ring seats so as not to interfere wish the attechmenl; of the rim to the wheel.

in she ring 7 are interposed two hinged in lhe county of Coolcand State of" sections 9 and 10, respectively, which sire in the direction of its length. This lever projects from the end of the link 9 which is pivoted to the link 1.0, and it extends across the pivot joint 11 and also along the under side of the link and across its pivosl joint 13 with the ring 7, when the toggle joint is closed.

The toggle links 9 and 10 are curved on the same radius that of the ring Z, and 'When they are in alinement, they form a part of said ring so that its continuity is uninterrupted, and with the links in this position, the rim 5 is held expended. How

ward out of. alinement, the rim 5 is com .7 over, when the toggle links are swung in are connected thereto throughithe rii "7, v

and upon swinging the links back into a me merit the .y'im is again expanded. The curves ture of the lever 12 is such that it conforms to the curvature of thering'l, and it his closely against the toggle links and a por- I tion of the ring when the latter is expanded, said parts being recessed, as shown at 1%, toaccommodate the lever. The ring is therefore devoid of projecting parts to interfere with the proper application of the rim 5 to the Wheel Fig. 6 shows a rim split in three places and provided with a corresponding number of shrinking devices to prodnce more shrink connected links pivoted to, the rim at the .split portion thereof, and a lever permanenily connected to one of the links and projecting therefrom in longitudinal alinemeni; therewith, for flexing the links to contract the rim, the other link being recessed to seat the projecting end of the lever.

In testimony whereof- I slfix my signature. 10

Jansen. snows. 

